Thanks to all and yes, the CD which I was using was recorded with nero.But only a question, if I use Click'N Burn to start a multisession data CD and then I continue the recording with this program, will it be done normally?
It can be that Click'N Burn doesn't recognize CD's of this type recorded with other programs like nero or CDRWin.
I recommend Click'N Burn or Prassi PrimoCD.They are small but very good CD-R burning programs for data and music CD's.Not for copies because it doesn't have additional options.
The pack which you can find in the downloads section is too big (19 MB.) because it contains four language setups (English, spanish, french and italian) and Veritas DLA.